XUL or not XUL

Hi all,

    perhaps you might be able to enlighten me on what exactly constitutes 
XUL compliance? I was originally of the understanding that XUL was the 
Mozilla standard as described at: http://www.mozilla.org/xpfe/xulref/.

When looking at the sourceforge site (http://xul.sourceforge.net/) for a 
stand alone XUL client (i.e. not Mozilla) I came across the heading "Major 
Open-Source XUL Motors - The Big Five". I thought that this was exactly what 
I needed. I was enticed by descriptions such as "Thinlet: Tiny XUL Motor in 
Java" or "SwiXml: Tiny (less than 30k) XUL Motor in Java for creating Swing 
UIs for apps". Upon looking at link after link, however, it became clear 
that none of these were XUL engines: at least not XUL as prescribed by 
Mozilla. They ware simply clients capable of generating UIs based on a 
proprietry flavour of XML.

This now raises two questions:

(1) does XUL on xul.sourceforge.net simply refer to ANY XML syntax used to 
descrie a GUI?
(2) is there any stand alone platform / engine for rendering the Mozilla XUL 
syntax?

Dominic.




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